The Irishman filmed at Hempstead Town Hall, Hempstead. Hoffa fends off press questions outside this town hall, which stands in for Teamsters headquarters in Washington. On screen it's Teamsters HQ, Washington DC.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
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Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Hempstead and it tells you what was shot around you, how to get there, and whether you can actually go in.
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